12444422 has 8 divisors (see below), whose sum is σ = 19310400. Its totient is φ = 6007624.

The previous prime is 12444413. The next prime is 12444437. The reversal of 12444422 is 22444421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107222 + ... + 107337.

It is an arithmetic number, because the mean of its divisors is an integer number (2413800).

Almost surely, 2^12444422 is an apocalyptic number.

12444422 is a deficient number, since it is larger than the sum of its proper divisors (6865978).

12444422 is a wasteful number, since it uses less digits than its factorization.

12444422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214590.

The product of its digits is 2048, while the sum is 23.

The square root of 12444422 is about 3527.6652335504. The cubic root of 12444422 is about 231.7349703421.

Adding to 12444422 its reverse (22444421), we get a palindrome (34888843).

Subtracting 12444422 from its reverse (22444421), we obtain a palindrome (9999999).

The spelling of 12444422 in words is "twelve million, four hundred forty-four thousand, four hundred twenty-two".